Rustoleum fail

[chessie4905]

   Poor prep work, not bad paint. I use a lot of it and never had a problem with it. Same color btw. You should have used a good primer first. You can't just "scuff it", that isn't going to cut it. And wash it down after thorough sanding with something like lacquer thinner. Wipe it off twice with plenty of clean rags. There are some primers that will apply to glossy surfaces also. Also, who knows how much silicone impregnated wax or sealers have been applied over the years. We used to use XIM over school bus repaint, especially because of galvanizing under factory paint. Don't know if it is still available.

[Zephod]

   Poor prep work, not bad paint. I use a lot of it and never had a problem with it. Same color btw. You should have used a good primer first. You can't just "scuff it", that isn't going to cut it. And wash it down after thorough sanding with something like lacquer thinner. Wipe it off twice with plenty of clean rags. There are some primers that will apply to glossy surfaces also. Also, who knows how much silicone impregnated wax or sealers have been applied over the years. We used to use XIM over school bus repaint, especially because of galvanizing under factory paint. Don't know if it is still available.

Don't know. It has only done this in some areas. It's not all over.

Sent from my Nexus 7

[kyle4501]

Don't know. It has only done this in some areas. It's not all over.

Sent from my Nexus 7

LOL.

Are you listening?
That is the thing about poor preparation and execution.
Some surface contaminants can be very difficult to remove.
Your pictures show that some areas seem to have been ok with minimum preparation. Other areas obviously needed lots more effort.

Not pointing any fingers (but if the shoe fits),
Continual denial won't improve the existing situation - but it will impede progress. And, it may result in less assistance in the future.

BTW, most people who know how to fix 'it' won't argue with a fool - it is more entertaining to just watch & laugh at them. 
 

[gus]

I washed the bus, sanded the paint and then rinsed off the dust, allowed it to dry, painted with Rustolium and 10 months later... Rustoleum failure. I contacted Rustoleum and they asked the batch number and announced they were sending a refund. Looks like there are known bad batches of Rustoleum out there.

Looks like I'll have to repaint the entire bus after scrapping the Rustoleum junk off *sigh*
https://goo.gl/photos/mX2iMynW8TUaQmw5AA

Consumer Reports ran a lengthy test on Rustoleum paints many years ago and determined that it is no better or worse than any other paint in controlling rust in spite of their advertising.

[eagle19952]

Don't know. It has only done this in some areas. It's not all over.

Sent from my Nexus 7

$500.00's a gallon paint won't do the prep work....you gotsta do it your self

[Zephod]

LOL.

Are you listening?
That is the thing about poor preparation and execution.
Some surface contaminants can be very difficult to remove.
Your pictures show that some areas seem to have been ok with minimum preparation. Other areas obviously needed lots more effort.

Not pointing any fingers (but if the shoe fits),
Continual denial won't improve the existing situation - but it will impede progress. And, it may result in less assistance in the future.

BTW, most people who know how to fix 'it' won't argue with a fool - it is more entertaining to just watch & laugh at them. 

Hmm....

Well, painting is way down on the list of things to do for the moment but... What would you do that would cost the absolute minimum?

At the moment I'm getting the bus livable. Plumbing, electrics etc.

I'm planning to rebuild a cable compartment some previous hillbilly owners installed. The plan is to build a cage of angle iron secured with 4 x 10-24 hex bolts at each joint with nuts and lock nuts. The bolts have a sheer strength of 1200lbs and the compartment plus two batteries will not weigh more than 200lbs. The bolts have extra large heads.

I did consider welding with Harbor  Freight's cheap welder but decided now is not a good time to start trying to weld!

So, back to the paint. I'll let whatever flakes off, flake off then run over the surrounding areas with a wide brush. I think I probably need a barrier  layer on top of whatever they painted the bus with. Any ideas on what they used as paint and what barrier layer I could use?

Sent from my Nexus 7

[Iceni John]

I did consider welding with Harbor  Freight's cheap welder but decided now is not a good time to start trying to weld!

FYI, the cheapo Harbor Fright 90 amp wire-feed welder is a POS.   It has only a 10% duty cycle, i.e it's bloody useless, unless you like waiting 9 minutes after welding for one minute!   Some HF stuff is OK, but much of it like that welder is worthless crap, so save your money and buy a real welder like a small Miller or Lincoln when the time comes.

Also FYI, I've done everything so far on and under the bus with good ol' bolts 'n nuts.   I've hung all four tanks, 400 gallons total, using threaded rod and bolted support frames, and made pull-out battery trays for ten batteries and pull-out mounts for my generator and propane cylinders all without a single weld anywhere!   It would have been quicker to weld some things, but better or more secure?   Probably not.   A well-designed bolted connection is just fine, especially where there could be flexing or movement.   Welding is not always automatically better.   Plus, the first time you change your mind and want to remake something you'll be thankful it's easy to deconstruct.

John

[RJ]

A well-designed bolted connection is just fine, especially where there could be flexing or movement. Plus, the first time you change your mind and want to remake something you'll be thankful it's easy to deconstruct.

Wise words for a busnut from a busnut!

 

[Oonrahnjay]

...    Plus, the first time you change your mind and want to remake something you'll be thankful it's easy to deconstruct.
John

    Change your mind and want to remake something??   Surely,  none of us would ever need to do that!  (Personally, I'm about 235% finished with m conversion, if you know what I mean.)

[kyle4501]

Hmm....

Well, painting is way down on the list of things to do for the moment but... What would you do that would cost the absolute minimum?

What I DID -
I collected parts including a spare engine, transmission, & a bus or 3 . . . Then, I planned what the additional cost would be to finish the  conversion, ---
I looked at what was for sale for comparison purposes.
Then I bought a used factory converted diesel pusher for less than a third of what I would have had in the bus.


BTW, industry standard is to use a safety factor of at least 10 on bolted connections.

[lostagain]

I find it quicker to weld than drilling holes for nuts and bolts. And if I have to undo it, an angle grinder is pretty fast.

JC

[Zephod]

What I DID -
I collected parts including a spare engine, transmission, & a bus or 3 . . . Then, I planned what the additional cost would be to finish the  conversion, ---
I looked at what was for sale for comparison purposes.
Then I bought a used factory converted diesel pusher for less than a third of what I would have had in the bus.


BTW, industry standard is to use a safety factor of at least 10 on bolted connections.

16 bolts, each with a 1200lbs sheer strength should carry my under 200lbs compartment lol.


Sent from my Nexus 7

[Zephod]

I find it quicker to weld than drilling holes for nuts and bolts. And if I have to undo it, an angle grinder is pretty fast.

JC

Ideally, I would weld but since I've never weldedbefore, now is probably not a good time to start and I hear welding galvanized steel has its own issues

Sent from my Nexus 7

[Zephod]

That Rustoleum must have been deal junk. So far it has peeled off....
A cleaned, painted bus
Clean bare aluminum
The splashes that got onto the turn signal lenses have just peeled off
Painted aluminum - its peeling off that and I don't believe that was ever painted with cellulose
And it's also peeling off cured paintable sealant!

In the words of John Wayne... It don't stick to nothing!

[kyle4501]

Ideally, I would weld but since I've never weldedbefore, now is probably not a good time to start and I hear welding galvanized steel has its own issues

Sent from my Nexus 7

Why not? Lack of painting experience didn't stop you from that endeavor.  


It appears you are either looking for an audience to hear your fussing, or just looking for someone to agree with you.  
Good luck with that.


I'm guessing you are not really interested in any advice or suggestions as to how to do anything properly.